48997891 has 2 divisors, whose sum is σ = 48997892. Its totient is φ = 48997890.

The previous prime is 48997877. The next prime is 48997931. The reversal of 48997891 is 19879984.

48997891 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 48997891 - 2¹⁵ = 48965123 is a prime.

It is not a weakly prime, because it can be changed into another prime (48997801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24498945 + 24498946.

It is an arithmetic number, because the mean of its divisors is an integer number (24498946).

Almost surely, 2^48997891 is an apocalyptic number.

48997891 is a deficient number, since it is larger than the sum of its proper divisors (1).

48997891 is an equidigital number, since it uses as much as digits as its factorization.

48997891 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1306368, while the sum is 55.

The square root of 48997891 is about 6999.8493555219. The cubic root of 48997891 is about 365.9253209435.

The spelling of 48997891 in words is "forty-eight million, nine hundred ninety-seven thousand, eight hundred ninety-one".